标题： 超对称QCD中的域墙动物园 显示英文标题

标题： Domain Walls Zoo in Supersymmetric QCD

摘要： 数值求解描述具有SU(2)规范群的超对称QCD有效拉格朗日量的运动方程，我们发现了一系列连接不同手征不对称真空的复杂域墙解。 其中一些解是BPS饱和壁；当物质场的质量不超过某个临界值m < m* < 4.67059...时它们存在。 还存在sphaleron分支（能量泛函的鞍点）。 在范围m* < m < m**\approx 4.83内，其中一支分支变为局部最小值（这不是一个BPS饱和的最小值）。 当m > m*时，复杂的壁完全消失，只剩下连接一个手征不对称真空与手征对称真空的壁。 显示英文摘要

摘要： Solving numerically the equations of motion for the effective lagrangian describing supersymmetric QCD with the SU(2) gauge group, we find a menagerie of complex domain wall solutions connecting different chirally asymmetric vacua. Some of these solutions are BPS saturated walls; they exist when the mass of the matter fields does not exceed some critical value m < m* < 4.67059... There are also sphaleron branches (saddle points of the ebergy functional). In the range m* < m < m** \approx 4.83, one of these branches becomes a local minimum (which is not a BPS saturated one). At m > m*, the complex walls disappear altogether and only the walls connecting a chirally asymmetric vacuum with the chirally symmetric one survive.